unify host programs across targets

targets/wasm-module/cored.cpp

@@ -35,8 +35,11 @@ typedef int8_t sign_t;
 static enc_t cored_res;
 static enc_t sum_out[REPLICA_COUNT];
 
+// The prints here can't happen because they're disabled under test ¯\_(ツ)_/¯
+
 static INLINE enc_t apply(enc_t vc, sign_t bdyn) {
   if (bdyn > SIG_MAX) {
+    HOST_PRINT("signature overflow.\n");
     fail_marker_detected();
   }
   return vc + bdyn;
@@ -58,6 +61,7 @@ static sign_t cored_vote(void) {
     cored_res = apply(XC, (XC - ZC));
     return SIG_s_XZ;
   } else {
+    HOST_PRINT("all replicas differ.\n");
     fail_marker_detected();
     return 0;
   }
@@ -72,15 +76,11 @@ template <const unsigned int N, const sign_t S> static INLINE void sum(void) {
   sum_out[N] = encode(sum, THE_A, S);
 }
 
-extern "C" int wasm_module(void) {
+extern "C" EXPORT("wasm_module") int wasm_module(void) {
   XC = 0;
   YC = 0;
   ZC = 0;
 
-  // TODO: Start trace from WASM?
-  //       - Simpler, as only a single wasm function has to be called for all
-  //       modules
-  //       - Doesn't inject wasm_runtime_call_wasm() setup
   fail_start_trace();
 
   sum<0, SIG_X>();
@@ -102,6 +102,7 @@ extern "C" int wasm_module(void) {
     vote_result_sig = SIG_Y;
     break;
   default:
+    HOST_PRINT("unknown static_sig.\n");
     break;
   }
 
@@ -110,15 +111,18 @@ extern "C" int wasm_module(void) {
 
   /* Validate Vote result */
   if (!check(cored_res, THE_A, vote_result_sig)) {
+    HOST_PRINT("voted result invalid.\n");
     fail_marker_detected();
     return 2;
   }
 
   plain_t res = decode(cored_res, THE_A, vote_result_sig);
   if (res == 100) {
+    HOST_PRINT("cored success.\n");
     fail_marker_positive();
     return 0;
   } else {
+    HOST_PRINT("undetected error.\n");
     fail_marker_negative();
     return 1;
   }

targets/wasm-module/sum.cpp

@@ -1,6 +1,6 @@
 #include "../lib.h"
 
-extern "C" int wasm_module(void) {
+extern "C" EXPORT("wasm_module") int wasm_module(void) {
   fail_start_trace();
 
   int sum = 0;